MegaMan: NT Warrior

The Incredible Rush! (1x41)

Air date: Dec 16, 2002

Everyone is confused when Rush appears in the real world and everyone's NetNavis begin transforming into cats. It seems a powerful cat virus has escaped, and if it isn't stopped, everyone's NetNavis will permanently become cats. The episode builds up to a Godzilla-sized battle between Rush and the cat virus.